Tandem tamping-machine.



No. 891,954. PATENTED JUNE 30, 1908.

G. ROSS & S. F. DEAL. 4

TANDBM TAMPING MACHINE.

. APPLICATION FILED FBB.24.1908.

GEORGE Ross .aan STEPHEN E. DEAL, or KANSAS CITY, MISSOURI.

Tama-EM frm@- No. 891,954.. y

To all whom it may concern:

A Be it known that we, GEORGE Ross and STEPHEN F. DEAL, citizens of the United States, residing at Kansas City, in the county 5 of Jackson and State of Missouri, have invented certain new and useful Improve ents in Tandem Tamping-Machines, of whic the following is a specification.

This invention relates to tamping machines of that character embodying peri herally toothed tampin' wheels or mem ers for tamping from the bottom upward as distinguished from the ordinary tampers which tam from the surface downward and our object 1s to produce a machine of this character provided with two tamping rollers each consisting of a series of toothed Wheels or members and one adapted 4to be turned for the purpose of guiding the machine in the desired direction. 1

A further object is to produce a machine which can be converted from a tamping into a rolling .machine and vice versa and which carries its own motive power.

With this general object in view -the invention consists in certain novel and peculiar features of construction and organization as hereinafter -described and claimed, and in order that it may be fully understood refer-' ence is to be had to the accompanying drawing, in whicht A v Figure 1, is a side elevation of an ordinary steam rolling machine equipped with tamping rollers embodying our invention in lieu of the ordinary smooth rollers. Fig. 2, is\an V enlarged vertical section taken through the front or traction roller of the machine.

In the said drawing, 1 indicates the frame of the machine terminatingat its rear end .40 in a gooseneck 2 and equi ped with a boiler 3 and with an engine an other equipment not shown of `a boiler for the purpose of developing the power necessary to pro elthe. mac line, this equipment correspon "ng to that of an ordinary steam roller.

carries a water tank 4 and the toolbox 5 as usual though by preference lsaid parts will be.

detachable for the purpose of facilitating an exchange of rollers when necessary to convert the machine from a tamping into a rolling machine and vice versa. At its rear end the machine is provided with the usual swivel yoke A6, equipped with a transverse A The teet The frame Patented June 30, 1908.

shaft 7 and at its front end the frame carries bearings 8 for a transverse shaft 9.

The tamping rollers l0 and 11 are of identical construction except that the former is smaller than the latter and certain ofthe wheels or members of thelatter are rigidly secured upon their respective shaft in order to obtain the necessary traction on the ground to propel the machine. Each roller consists of a series of peripherally toothed wheels or members comprising hubs 12, spokes 13, rims -14 of triangular form in cross section and long teeth 15 projecting radially outward from the oblique outer faces of the rim, the teeth of one face being disposed alternately with respect to t-he teeth of the other when viewing the wheel or member from the side. The wheels or members are arranged side by side and in roller 10 are capable of independent turning movement on shaft 7. The wheels or members of roller 11l are likewise arranged side by side on their shaft 9, butin this roller a sufficient number of them to give the desired traction on the ground, 'are secured rigidly on the shaft,'

three being shown as secured rigidly on the shaft in Fig. 2, by means of screw bo ts 16.

The teeth of the wheels or members of both rollers taper slightly toward their outer ends will withdraw their embedded faces from the ground with but little if any tendency to lift or kick up the earth, it being understood that their outer faces or ends are sufficientl broad to perform a tamping as-distinguishe from a digging or plowing function. i

of the tampingwheels or rollers being spaced apart tam 1n s ots, it beings understood that the eart or ot er substance i bein tamped ,is in a soft or loose condition and ecause of this fact the teeth which by 4preference in length will correspond to the 'lptli of the loosened "earth or substance,

`.be deeply embedded and thus act to eachgtamp a small'part of such earthor substance down upon the solid earth or other passage of the teeth. they will press un= tamped portions downupon that previously tam ed :so that repeated passages of the teet gradually superpose and compress together what may be termed tamped sections 'Y by preference in order that in the movement "of the machine forward on backward they 1'00 substance beneath.` On each subsequent` or layers `of the earth or other-substance and eventually pack the entire mass solidly from the bottom u ward .as distinguished from the l underl 'ng bed.

In t e copendin a plication led in the names of Stephen eal and Geor e Ross as inventors Jan. 31, 1908, Serial umber 413,708, a singley toothed tamping roller is disclosed consisting of the series of independently rotatable wheels or members and adapted to travel in one direction only, it being necessary to finish the surface tamped said roller with a smooth roller machine. 's invention differs fromt-hat in thatit embodies a pair of rollers one of which acts as a traction rollerby having certain of its wheels or members rigid with the shaft with v the teeth of such rollers of such form that the machine can be run forward or backward s without picking' or kicking up the earth or other substance. This invention also differs from that forming the subject of said copending ap' lication in that one of its toothed rollers can e turned for the purpose of guid-l ing the machine in thedeslred direction it being further noted that in the guiding roller 10, all of the wheels or members are jour- .naled on their supplorting shaft so that in turninlg some of suc wheels or members are capabe of turning backward or at varying speeds according as the turn is sharp or otherwise. In view ofthe fact that there is v a' relative movement between the contiguous wheels or members and also because of the triangular or wedge shaped rims, the earth or other substance will not become wedged or packed in between'their teeth and thusvin-V terfere with the pro er tamping function,-this beingaiso true of t e roller of the copendin'g appxllication. y

- order that motion maylbe imparted to the machinethe end wheels or members of the. l

front roller lwill be equipped with beveled gear wheels 17 to be engaged by the customarydriving pinions, not shown of the maltures, the presence of two witnesses.

'we claim'as new and desire to secure by Letters Patent, is

1. A tamping machine, comprising a suitable frame, a pair of rollers sup orting the same and arranged tandem, one o the rollers being swiveled to the frame, and consistin of a series of independentl rotatable toothed wheels or members and t e other of a shaft. and a series of toothed Wheels or members some of which are secured rigidly on the shaft 'U5 and otherslooselythereon. f Lg,

2. A'ltarn'ping machine comprising a suitable frame, a pair of rollers sup orting the same and arranged tandem, one o the rollers y being swiveled to the frame, and consisting of a series of independently rotatable toothed wheels or' members 'and the other of a shaft and a series of toothed wheels or members, the outermost of which are secured rigidly on the shaft andv rovided at their outer sides with gear whee s and others loosely on said shaft.

3. A tamping machine comprising a suitable fralne, a pair of rollers sup orting the same and arranged tandem, one o the rollers being 'swiveled' to the frame and consisting of a series of independently rotatable skeleton Wheels or members rovided with radial outwardly taperin teet and the other of a-shaft suitably journa ed, a series of wheels or members 'ournaled thereon and a. plurality of Whee s or members rigidly secured thereon, the said wheels or members being equipped with radial outwardly taperin teeth. 4.

Intestimony whereof we a oursignay'lv vGEORGE ROSS.v STEPHEN F. DEAL. Witnesses:

H. C. Romans, G. Y. Tnoarn. 

